Chemical and phase characterization of the sediments of the river "Martín Pérez"

Authors

  • Félix C. Domínguez Universidad de la Habana
  • Joelis Rodríguez Centro de Investigaciones Minero-Metalúrgicas
  • Cristina Díaz Universidad de la Habana
  • Ramón Pomés Centro Nacional de Investigaciones Científicas

Abstract

The Martín Pérez river is one of the three rivers that run into the Bay of Havana. Four sampling points were selected, one in the Guanabacoa inlet and the others up stream (one near the mouth of the river, one near the head of the river and an intermediate point). The sediment samples were kept frozen until they were lyophilized and sieved, for the analysis the fraction of less than 63 mm was taken. In the samples the total contents of organic matter, CaCO3 and humidity were determined. The samples were submitted to a three stage sequential extraction procedure, following the recommended one by the Community Bureau of Reference and in the extracts Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn were analyzed by Atomic Absorption Spectrometry. In order to determine the sediments. phases composition and their relationships with the metal contents in extracts, X Ray Diffraction was used. The main mineralogical phases founded were calcite, quartz and montmorillonite; in them are associated the major fraction of the metals under study. The method was applied to the materials both before and after different steps of the selected sequential extraction procedure. These results enable for the first time to arrange the information regarding the structural and elemental composition of the sediments. It facilitates a greater knowledge of the inorganic pollution of this river.

Published

2022-06-01

How to Cite

C. Domínguez, F. ., Rodríguez, J. ., Díaz, C. ., & Pomés, R. . (2022). Chemical and phase characterization of the sediments of the river "Martín Pérez". NATIONAL CENTER FOR SCIENTIFIC RESEARCH (CENIC) CHEMICAL SCIENCES JOURNAL, 32(3), 129-133. Retrieved from https://revista.cnic.cu/index.php/RevQuim/article/view/1663

Issue

Section

Research articles